Type effectiveness
Type effectiveness are the multiplier a move's type receives against the target's types: 0, 0.25, 0.5, 1, 2 or 4 times
Against a dual-type Pokémon the two chart entries multiply, so Ice against Grass and Flying deals 4 times. A move rated 2 times or more is labelled super effective. Fixed-damage moves such as Seismic Toss ignore the multiplier apart from immunities.
Main-series games; introduced in Generation I, Red and Green.
One later change
- Scarlet and Violet let Terastallization replace both defensive types with one for the rest of the battle.